Carbureter.



L.-J. PETER.l

l UARBURBTBR.

APPLICATION FILED 1230.428, 1907.

Patented 14pm, 1911:

2 SHEETS-B331F21.

.SEX

L. J. PETRE.

v GARBURETER. APPLIUATION FILED 1330.28, 1907.-

Patented Apr. 4, 1911 2 SHEETSSEBBT 2.I

fo rneys 71 ess QS .UNITED STATES PATENT onirica.

LOUIS J; PETRE, OF EAST CLEVELAND, OHIO.

CARBURETER.

Sneccation of Letters Patent.

i Application `filed December 28, 1907. Serial No. 408,371. p.

' withstanding Wide fluctuations inthe openings of said valves, and wherein the open ingof the valvesLis accomplished only; when a high suction' obtains in engine or engines with which the mixing-chamber is connected. .1i

The objeotsbf'theginvention are generally to improve' andsimplfy .the construction and operation off carbure't'ers of this type.

Generally speaking, the inventionmay be defined as consisting oil-the combinations of elements embodied 1n the 'claimsheretc an.;` nexed and illustrated inthe drawings, wherein- Figure 1 Arepresents a longitndinah sec-v tional view t ken through the central 'porA tion of aLcar r'reter eonstruetedinfaccor:

` ance" with'my invention, the throttle, 'val vc being shtwn .in elevation. Fig.' 2 'represents' a section on the line 2l'-2 of Fig. l, looking inthe direction of the arrows'. Fig.

Y rcpresentsaf detail .ifn 'plan of the, .lever on' the strictly 1n accordance with the law 'over-ne' 'ing the flow o'ftluids. By keeping t e' su'cconnecting the' air andgasolene valves. lFig 4 represents atransversesectional view of vlthe device shown in Fig. 1,"and Fi v5,represents: an' enlarged detailrof vthe gasolcne vai/ve stem showing the mannerifn' ,which thestem is secured to the float.'

essonne, which. awe as a liquid when only' a slight vacuum is created, vaporizes readily andll'owsasa .when the suction is increasedl Consequentlyghthe hole which wasV oi. the right .size to admit-the proper quantity'of v,@,gfasolene is too large-for the vapor of gasolene, and too rich a .mixture My invention does away with the necessity ofladjustment and theearbureters built rinciples .of-"my invention operate of'tlie float chamber.

-. ed md5 31 feria, purge@ 'aa-bev tion practically constant the gasolene wil'l "always flow in the same vaporous condition und the quantity will always be roportional to the size of the o ening.

vmaintained between the gasolene and tlieai-r openings, an unvarying proportion of the two fluids will follow. In my inventionI have so arranged the air valve and the fuel valve that any movement of' the former hns itA will be seen that if a xe ratio of size bel Patented Apr. 4, 1911. g

.causes an exactly .proportionate movement of the fuel valve, thereby always giving a perfect mixture no matter what the speed o the engine may be. s

accompanying drawings, in which#- 1 represents the float chamber, whichvis 4provided with a hollow metal float '2 therein '70 The above principles of my invention are embodied in the constructions shown in the mounted on the valve steinI 3, the upper end whereof extends through and is guided by the cover' 4, and the lowerend Whereofji-s provided with the valve 5, shown as. an 11pwardly seating' tapered valve coperating jat? with the correspondingly tapered seat 6Lv The valve 6 is provided in a tubular eonnec tion, 'the upper end 7 whereofV is'threaded into a nipple 8, projec'tin fromv the bottom T tubular connectionis' provided .with ari internal nut adapted to abut against the lower endv of the nipple Boby means of which theconnection `=rnay.be threaded into said nipple. Below lthe nut, the connection is provided with a'. 4plain 'or 'uht-hreadedportion 10 havinr opi positely located ports 11. therein and elow said pla-in portion withthefthreaded end 12. i '13denotes the .gasolenc supply connectiony having a sleeve 14 adapted-to t loosely the smooth portion 10 and providedwth a pa's-A g sarewayi adaptedgto communicate with eitllielpf the ports' 11. Thewconnecti'on 13 1s ordinarily Aheld in place. means of the elonvated hollow mit 1 6;"-'fv'vllx'cliA is threaded on Vthe lowerend'l, washers 17and18 be` ing provirsled between the upper 'and ythel lower surfaces of rthe' sleeve andv 16 respectively;- v a Float 2 is retaied! "pla` :stem by means off afspirfalwre L f appli. v theetem 'above the top'- :oth e wel v pitchof this spiral is equal 'to 'the threads Z0' on the-,upper :steniand snidwire is provldewith .lathe-valve cri a proper-distance.

thel nuts 9 ictl stem 3 is provided with a circular groei-e into which is fitted a. wire 22 formingr a support for the lower end of the float. ln applying the float to the stem, it is only neers- 5 Sary to insert the upper end of the valve stem' through the float. The float will rest upon,l wire 22. Spiral wire 1 0 is then app to the top'pf the valve stem by pressing the arms 2l toward each other. By holding one of said armS and turning the stem 3, the wire may be threaded along the stem in the same manrer as a nut until it engages the top of the float. The employment of the rcs cess-in. the stem and the wire 22 enables me to form an'abutment for the lower surface of the float' without enlargin the valve stem, and this enables me to em doy a relatively small sized bore in the tuliular connection and yet maintain a sutiicient passageway around the stem for the flow of gasolene into the float chamber.

The tloat chamber is rovided with a lat-r eral arm `23 havin a s eeve 24 at the end thereof loosely fitting the tubular connec- "25 tion 25 which is threaded into the bottom of passageway 28 inthe arm 23, although suchl .30 registra-tion'is not necessary, owing to the fact that the pars containing the ports is constricted so .that the 4gasor liquid may flow around it and' enter the ports irrespective of theiriposition with respect -tozthe pas tween mits' 29 andBO'ion the connection 25. .The fup r'. rtion of 25is.. reduced atl, 'ands'uchere uced portion extends u wardl'y i through the bore of/chamber 26am is pro- 40 videdwitha-val'veseat 3 2 for the valve 33 which admits the chamber.-

is tooperate my device under relatively higlh suction, or minus pressure', in the 'c "amber, .the l'ordinary level of gasolene in the :float chamber l will be com nier4 "ably below. the outlet .port .-34 in tube 3,1', flprnially preventing gasolene from entering 4fe; ruiningchambe'r E1na liquidI condition. 5Q\. `5Above valve seat32, the mixing chamber is ljpriwidedwith a tubular bearing adapted to receiver-sleeve 136 having an operating handle-37.1;-Saidsleeve is providedat one 'sidel thereof 'with un' interna ly threaded boss 38 the upper edge whereof is 4ush with the top ofr't e-slee've. The top of sleeve 36 is L provided-with a'ailanvge 3 9 adapted to rest on top 'of bearing 3 5 and boss 38. The central -portieri 'of said 'sleeve is' extended upwardly tionofthe springfil', the'low'er-end whereof -beafrsagainstithe flange 42 o n the valve 33.]- 3 denotes'-a;- tubularsieevemounted onthe foff tubular connection 25, the

Lend illch'l sleeve" 'projects above A`solene vapor intol the wing tothe fact that it f (he lop of 31 and engages dan e 42 when4 valve :lit is yseated. Sleeve 43 1s provided with a boss. 44 which is internally threaded for a pin or screw 45, which is threaded through said boss and provided with a locknut46 applied to its lower end. The up er end of screw 45 projects into a cylindrlial recess 47 provided in sleeve 36, and sleeve 36 is retained in place by a. clam 48, 4which. surrounds the extension 40 and is secured to boss 3B by means of a screw 49. By tightening screw 49, thc friction of clamp 48 on the adjacent surface of sleeve 3G may be adjusted as desired, so as to permit the rotation of vthe sleeve and screw 45 and retain '-the same in any desired position. .The recess 47 is shown on the opposite side fromliandlo 37 and serves as an index for the position of pin or screw 45. The construction described provides a rotary lever-engagin member for valve 33, as will appear her'ema ter.

The mixing chamber 26 is elongated and is provided at one end thereof with a throt tle valve 50. T he opposite end is closed, and said chamber is provided beyond the con. nection of 25 therewith with an enlarged circular aperture 5l. The bottom of the chamber surrounding said aperture is provided with a flange 52 against which abuts a flange i53 forming preferably an integral part of the elbow 54 throu h which air is admitted to the chamber. T e upper end 'of said elbow tits the aperture 51 snugly and is provided with a beveled edge for the air valve 56. Flange 53 is provided with equi-distant apertures for the 'receptionof screws 57 and said'iiange is preferably :square in outline with 'anaperture at each corner, whereby the elbow connection 54 may be applied to-the 4bottom of the mixing chamberv at varying 105 1 angles to meet the conditions of use-,the bot-- -tom of the chamber' beingprovided with threadedaperturesV (l1/ot shown) for the rer caption of. said screws. Valve 56 Yis provided `with a -valve' stem '58 which threaded ftherethrough, a lock-nut '59 being provided on`the'upper end. of said stem.' This stem rojects downwardly Vthrou h a cylindrical goss 60`formed with saiduel W into the cylinder. 61 of a liquid -dash-potlcarried bysaid elbow. This dashl" t is carried b the un- -dergside of the el w, the ylin er, beingl threaded into an internally-threaded flange 62 formed withsaid elbow. A t, its lower end, the stem 58 is provided with the Apiston 463 of the dash-pot, smid 'iston being retained in lace by means lof t e nut` 64.' Between 'sai piston and the lower surface of the elbow, thereis inter osed'a spiralspring 65, .the o eration of w ich will be described in- -detai hereinafter.

denotes a leverwhich 'is horizontally ivoted to the mixngmmberatam point.` etween the throttle vaflvea01and-the gaso- -leneva-lve 33; `This leverisforked 'and each 130 esame fork is provided with a tubular bearing 6l for the pivot rod 88. These forks project nec'tlm'A 31 and the valve thereina'nd being provided with luga 71 adapted to' overhang and assist in retaining a washer 72 on the upper surface of said' ever." A screw 73 is threaded .lnto said'leve'r in position to have its head' `enga e another portion of the washer and, wi lugs 71, retain the same in place. s `will a pear more particularly from Figl l, the ever is deflected downwardly intermediate of the ends thereof and the free end of said lever is elevated, whereby' the center of the -pivot of said lever, top of wesher 72 and lower surface of the free 'endl lef-are in 'substantially the same hori- Zonta] line. "Th'e point of screw 45 is adapted'te'enga e the uppersurace of washer 72 whenva ve 33 is seated. From this arrangement, it -follows that the lift of valve 33 will -alwa s be proportional to the lift of valve' 66 and1 b said valves 'an t eir ports, a constant proportion will be -maint-ained betweenV the opening vof'the gasolene port-and the open- Iing'v 'of thglair port.

Vtothe mixing chamber in aliquid con ition,

' I not only maintain constant' the -suction or minus pressure 'at which the 'air valve .willjopen and, through the lever 6 6,- open vthe .gasolene 'val-Ve, but oppose to such opening movement arelatively high resistance.' .In` practice', Iv have vfound 'that 'this resistance shouldbe 'from l10 'to 14 ounces. I accomplish thisv r'ult by mea-ns ot the s ring interposed 'between piston 63 and t e'of' ""s'ilteentl v'of .the 'dash-pot placing iipringunder such compression thatv the sa l .the alrtvalye will not open until a suction or 'minus pressure o f ten or fourteen ounces '45 By empl o`ying'a long spring, as shown,. thc

i 'p resistancefopposed to the further opening of the valve 'will not materially increase. In fact, thcre'will not be a variation of more than two ounces between the lsuction required to-open thevalyes to a minimum distance' and the' suct.ionfrequired to open the'valves to 'ma'ximum distance. An 11nvportant .featre'r of maintaining so nearly lleongitant-ft-he proportion between the moveinentsv of thevair' 'and'gnsolene'valves is that itigpna-bles me toi us l.a straivlit tapcr'for the 'gasolene valve and s'til'l maintain a constant v portion between theair andgasolenc Gsupplled. to-the lnixing chamber.

' Sho'ldg'it befdesirable to vary the pro-A portions between `the -gasolene andthe air- `admittedfto the .mixing chamber lthis can rope'rly proportioning the- "In order to avoid gasiolenehbeingsu plied has been 'produced inthe engine cylinder."

thereafter notwithstanding variationsin the xtent of opening of said valves.

'downwardly from said opening'and'prming the connection between thel lever 66 and the-gasolene valve to or from the pivot 68. By movin the screw or in inwardly,` the opening o the gasolene valve relative to the opening of the air valve will be diminished, w iile by moving the screw orpn outwardlyor towardthe free end of the lever, the openingol the gasolene valve relative lto the opening of the air valve-will be increased. In any event, after the predetermined proportion between the gasolcnc and air has leen secured by adjusting the handle 37, such proportion will be maintained constant It will be noted that' the bottom wall of the mixing'chamber'tapers from the gaso f lenov connection toward the throttle valve 50. Should any gasolene escape in liquid condition from such connection, it will run down the Wall of thc mixing chamber to the lower edge of the throttle valve, Where it vyillt-be'- in position to be atomized or vaporized by the air which isdrawnin through the air valve.

B the-,construction herein described, I prof ucea form of carbureter which is] par'- ticularly well adapted to carry outthe principles of my invention as disclosed in my', prior application, and which is compact,

simple of construction, easily assembled and disassembled and which is adapted to all ordinaryincidents of use. The manner of constructing 'and locating the dash-potenables me to ship the, carbureter without the 10a necessity of having' the glycerin orother liquid inserted into lthe dash-pot after its arrival at the-point-of use and vifithou't danger of spilling the contents thereof during ship,- 'menh I claim: i

l1. In a carbpreter, the "combination of a carbureting chamber, having' an opening-in the bottom thereof, an elbow p ilhjecting vided on its lower surface with a threaded seat, a. cylinder tli'readed onto said seat, a valve on the upper end of said elbow and having astem projecting into said cylinder, a piston on said stem, a Spring interposed '11115 between said piston and 'said seatl, a 'valve controlling the supply of Huid i'uel to said chamber, and connections whereb valves 4may be operated simultaneous y, nb stantially asspecified. -4 2. ,ln a carblrreter, th e combination o -carbureting chamber having in the-'bott' thereof an air port, a valve controllin air port, means' forretardingl the closing 'o` the'air port valve, af connection for snpply ing fluid fuel to said chamber., Ia valveg'con' trolling the flow of fluid fuel through said' connection, and a t lever eonnectin valves, said lever being piv' ed adiacentito one end thereof and-engagin -the' air-valve Irn)y Y valve for fluid fuel, a lever engagiu valves and adapted to be operated by t e a-ir at its free end and engaging the fluid fuel valve intermediate of its-ends, the valveengaging portions and the pivot of the lever boing in substantially the same straight line, substantially as specified.

8. I`u a. carbureter, the combination of a carbureting chamber having au air port and a fluid fuel. port., valves controlhng said ports, means for retarding the eloainJ of the air ort valve, alever connecting sai valves; sait lever being pivotedadjacent. to one enI thereof and engaging'4 the air valve at its free end and engagin the fluid fuel valve intermediate of its en spthe valve-engaging portions and the-pivot ofthe lever being in substantially the same straight line, substantially as specified.

4. In a carburetor, the combination of a c nrburetin chamber having an air '.valve, a valve forl uid fuel, a lever engagin said valves andadapted to be 'operated t e air valve, and means for varyin Vthe "point'of engagement of one of said va ves therewith', substantially as specified. 5. In avcarbureter, the combination, of a carburetingjcharnberhaving an air valve, a said valve, and-means forvaryin the point of `engagement",of'the 'fluid fue vvalve therewith, substantially as specified.

6. Ina earbureter, the combination of-a carbureting chamber, an air valve', a fuel valve "and a lever engagin said valves and adapted 'oobeoperated by, t ne movement 'othealr valve, the portion of the fluid. fuel.

valve' env agedV by the lever being revoluble to vary t e distance thereof from the point at which said lever engages the air valve, substantially'asspecife 7.,In a carbureter, the combination of a carburetingehamber, an air valve, a fluid fuel valve, a. sleeve surrounding .the .fuel

'valve revoluble'wlith respect to said fluid fuel valve and operatively connected. to the Said I d ever, asleeve havinglja bore-thereinforjthe-, l

valve, a: lever-engaging. member vcarried by said sleeve ,\and.a leverengaging the air valvelandhaving'a "surface adapted to engagesaid mem er,lsub,stantialllv as specified.v

8. 1n.a ca. rb.. refer, the, combination l,of a

carhuretingchamber, an air valve.,` 'a 'lul'id fuel valve, are'voluhle lever-engaging member for thelat-t'eevalve, and a lever engaging the" air valvenand'having a surface adapted lto. engage 'said member, substantially. asspecified.

.carburetingchamber un airport, a

a leve-i; pivoted al;`4 pnendthereof'a-nd hav ing Ofther' end o "er'atively engagedA Vwith the"a1"1" vive .e'ngprovided interI'ne-v= viles.. when @vente thrvlg'h lcarburetin chamber having an airl port and va carburetin .anda fluid enanos,

which the liuidffuel valve extends, and a revoluble member connected with the latter valve and adapted' to engage the lever at points outside of said aperture, substantially as'speeied.

10. In n. oarbureter, the combination of a carburetin chamber having an air port and a iiuidfue port, Vvalves for said porte, a lever [Ji-voted at one end and havin A its free end in o erative engagement wit the air v'alve an provided with an aperture intermediate of its ends through which the fuel valve extends; a Washer surrounding said aperture, a sleeve revoluble with respect. to

the axis of the-fluid fuel valve, a pm car- 'ried by saidsleeve and adapted'to engage said washer, and meanswhereby saidsleeve v may be rotated, substantially as specified.

1l. In a' carburetor, the combination of a 85 a fluid fue port, valves for said ports, a 1ever ivoted at one end thereof and having ee end'in ,operative Vengagement. wit the air valve, said lever being provided with-an aperture through the body thereof and a seat surroundin said aperture, saidl fuel valve extendingt rough the a rture,. a sleeve revolublewith iesspect tot e axis ofthe Huid-fuelvalve and operatively eenA nected with said valve to open-the Same, a pin `carried by `said sleeve, a memberfengagf', ing sii-id pin,. and a handle for rotating said,

'niember, substantially asspeeified.- n.

12. In acarbureter,athe.combi chamber havinga'n el port, valves. oreal a lever` pivoted atgpneen'd thereof an Efing with the air valve, saidrlever. bein providedf with an aperture. through theb v,' thereof and a seat surroundin lsaid apeltur 'dfuel valve extending t Aroughxthea a sleeve connected to and-revolu.ble wil; re-l spect to .the axis of the" fuel valve', a in4 earried'by said' eleeve and engag-i'nghe 1 10 the same, and said'revoluble I nembeop'ep ativelvengagmg the lever, a 'second member g for operating" said revluble memberjarjdgg provided withf'an ogeratmgfhandle servmgjlv as an index, substantially as' specified.

lh In;4 a` carbureter', the combination ofa. earbure'tin chamber y'liliv'iliifport s for' air" and fluid ue1,"valvs for-"s d ports a leverl "les" the Vao

'ing its free en said lei/er being iivoted at one end and havin operative engagement' with the air valve and being provided with a central aperture for the fluid fue] valve, said lever. being provided with a pair of lugs on the top thereof, a washer inserted under said lugs and surrounding the aperture in the lever,L a screw securing another portion of Said washer t-o the` lever, and a revoluble member connected to the fluid-fuel valve and having. a point adapted 'tobea on said Washen substantially as specific 15. In `a carbureter', the combination of a carbureting chamber having in the bottom thereof a passage for fluid fuel and being provided with an air port, a port in said passage, valves controlling said. ports, a connection betvveen said valves' whereby they operate simultaneously, and a rotary throttle valve. in said chamber, the bottom of the chamber being inclined downwardly from said connect-ion toward said throttle valve and formingr an unobstructed sloping passage-wayextending to a point directly lieneath 'the loiver edge of the throttle valve.

with the latter in closed tially a's speciedf." l

16. In a carburetor, the combination with a earbureting chamber, of` an/air valve, a Huid fuelvalve, and a member" mounted adjacent to the said fuel valve fand revoluble with respect to the axis of the latter valve, said member being operatively connecte-dto the fuel valve, an. adjustable member Jcarried by the last mentioned member, andalever engaging the air valve and engaging the adjustable member, substantially as sr/ecied.

position, substanearburet-ing chamber, a multiple of normally i closed valves for said chamber, a pa-rt of said valves controlling the admission of air and a part. the admission of fluid ufuel to said chamber, mechanical means for causing said valvesto have opening movements in unison,

and means for adjusting the point of contact of said means with atleast one ot said valves, at least one ot said valves being opened by direct suction action tiereon. 19. In a carbureter, the combination of a carbureting chamber, an air "valve and a fluid valve associated therewith, Said valves being normalli7 seated and the former opened by direct Suction thereon,- means for retarding a closing ot' the air valve, and lever means "for connnunieating 'opening movements in unison from one to the other of Said valves, the point of Contact of said means with atleast one of said valves-.and its fulcram beimgr relativelvadjustable.

In testimony whereof, I hereunto aix my signature/in the presence of twowtnesses.

LOUIS J PIETRE. lVitnesses:

J. B. HULL, BRENNAN B. WEST. 

